How do I fix code P1145?

Cost of diagnosing the P1145 code

Labor: 1.0

The cost of diagnosing the P1145 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

When there is a gap between angle of target and phase-control angle degree, the valve will stop working and the ECM will trigger the P1145 code.

Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

Possible engine lack/loss of power

Posssible engine rough idle

P1145 Meaning

This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.
The Engine Control Module (ECM) receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.